troops loyal to bashar al assad reach into their arsenal for more deadly weapons. even scud missile. officials say assad has between 3 and 400 of those short and medium-range missiles in his stockpile. the regime forces launched a scud from the suburbs of damascus. >> if this proves to be true, it's another indication of the deparagraph tea of assad and his crohn knees. >> once more, the forces last week started using what's called barrel bombs. >> it contains flammable materials. it's sort of a napalm and it's very, very concerning and indicative of the regime's brutality. >> human rights groups say it causes extremely painful burns, often down to the bone, burns that are often hard to treat. this comes after signs that an increasingly desperate assad is moving closer to using chemical weapons. chemical weapons plus scud missiles would be a lethal combination. >> if you were to marry up a chem kabl warhead on to the scud, you now have an area denial weapon system which is very nasty. it affects everybody. it doesn't discriminate from friend or foe. >> one means of